While I agree with you that the NFA is unconstitutional and needs to be repealed, I believe this is a large step forward from where it has been for 90+ years. It "should" be the springboard for the courts to abolish the registration part of the law. However ,I will believe that when I see it.
One thing the left does well is to take any small step forward in their agenda and then plan for the next step. They are always looking for the leap forward, but will accept the step... always moving.
I am not saying that you are this way but there are many on the right who will block moderate progress because it doesn't go all of the way. It is short-sighted.
All of that said, I am still unlikely to play by the new rules and order a suppressor. I will continue to be uncivilized and create excess noise until I can buy one without pictures and fingerprints.